- From: <touch@isi.edu>
- Date: Mon, 24 Jun 1996 09:46:03 -0700
- To: http-wg%cuckoo.hpl.hp.com@hplb.hpl.hp.com
- Cc: touch@isi.edu
FYI.
Analysis of HTTP Performance
Joe TouchJohn Heidemann, and Katia Obraczka
USC/Information Sciences Institute
June 21, 1996
http://www.isi.edu/lsam/ib/http-perf/
Abstract:
We discuss the performance effects of using per-transaction TCP
connections for HTTP access, and the proposed optimizations of
avoiding per-transaction re-connection and TCP slow-start restart
overheads. We analyzed the performance penalties of the interaction of
HTTP and TCP. Our observations indicate that the proposed
optimizations do not affect Web access for the vast majority of
users. Most users see end-to-end latencies of about 100-250 ms and use
modem lines, resulting in only 1-2 packets in transit. At these rates,
the optimizations reduce the overall transaction time by 25%. Rates
over 200 Kbps are required in order to achieve user-noticeable
performance enhancement, reducing the time per transaction by half.
----------------------------------------------------------------------
Joe Touch - touch@isi.edu http://www.isi.edu/~touch/
ISI / Project Leader, ATOMIC-2, LSAM http://www.isi.edu/atomic2/
USC / Research Assistant Prof. http://www.isi.edu/lsam/
Received on Monday, 24 June 1996 09:51:38 UTC